Safety razor and blade



May 21, 1935. H. R. SEGAL.

` i SAFETY RAZOR AND BLADE Filed om. s, 1931 I'NvENToR M ATTORNE v invention may assume. A

Patented May 21, 1935 UNITED STATES PATENT OFFICE SAFETY nAzoRlAND BLADE Hymann. segaLNew YorkN.Y. Application October 3, 1931, Serial No. 566,619

' 4`c`1aims. (c1. en -12)l Y This invention relates to improvements in safety razors. i ,v `It is a primary object of the invention to provide a safety razor having devicesA for guiding and supporting-the blade in its proper position on either the lguard or. the plate `of the razor.`l

`It is a further object of the invention to provide animproved safety razor blade which can be applied to `safety razor' frames having various Fig. 1 is 'aflongitudinal sectional'view throughV i asafety razor illustrating one form which my Fig. 2 is an outer face view of the guard and blade with the clamping plate removed, parts being broken away.

Figy3 is an inner face view of the clamping plate constructed in accordance with my inveninvention to various styles of razor frames.

Referring to the details of the drawing,` there isillustrated in Fig. 1 a razorcomprising a handle I6 and a head I2, the illustration being of a twopiece razor wherein the guard and handle are .formed of one-piece or are permanently attached together. The head I2 includes a guard I d 'and a clamping plate I6 constructed to drawthe vshaving blade firmly against the guard.

The plate I6 is preferably constructed of a le'ngth'so that 'it extends outwardly beyond the blade I8 as indicated at I9. The projecting end portion of the plate I6 may be rounded asshown so as to present no sharp surfaces and to reduce the thickness of the plate at the ends of the razor.

ends of the guard are further cut away as indi`A cated at I 1 to form spacesfor receiving any burrs or projections formed on the ends of the plate I6 intentionally or by accident.

' The outerends of the plate I6 arefc'ut away on the underneath surface of the sameas indicated.`

at I6al` so as to tend to prevent the formation `of "any burr extending below the underneath surface of the plate and` into contact with the blade 36 or the guard I4. Y

The guard I4 may be formed with the surface projections I4a at the corners thereof, if desired, which projections receive corresponding recesses configurations of blade supporting projectionsV Figs. 4, 5, 5a, 6 and 'l illustrate the application of the blade constructed in accordance with my `The central portions` of the ends of the guard in the corners of the clamping plate and of the formation of burrs on the guard I4 if it should be dropped to the-licor, for example.

In accordance with the present invention there is provided an abutment which extends across the major portion of the head and which is formed inV part on the outer face of the guard I4 and in part on the inner face or the plate I6. The rabutment thus includes a4 projection I8 formedon'the outer face of the guard I4 and.

the inwardly projecting lugs 2U formed on the inner face of the plate I6. The projections I8 and 26 together form a substantially continuous symmetrical abutment of the configuration illustrated inFigs. 2 and 3 for spacing the razor blade received` between the plate and guard.

The plate is formed withv a recess-for receiving the abutment I 8 and the guard is formed with openings or recesses, preferably the formenas shown, for receiving the lugs 20.

The plate is constructed to be removable with respect to the razor'` frame proper and to this end is provided with an attachment shank 22 formed with ascrew-threaded'portion 23 for cooperation with the attachment nut and with i i a squared or other outf-offround portion 24V for guiding the same in relation to the guard. The

shank 22 is constructedto be 'received in an opening 26 Vformedat the center of the guard,

the 'opening 26 being squared or of other out-ofround configuration corresponding to thercrosssection of `the outer portion 24 ofthe shank. The opening 26 is formed as a continuation of the hollow interior 28 of the handle IIJ and may be squared for a considerable' portion of its length or only adjacent the guard as shown.

Theattachment nut Vfor receiving the lscrewthreaded shank 22 includes Vthe internally' threaded attachment stem 30 which is formed integrally with or permanently attached to the thumb piece 32 positioned at the inner end of the handle`- I 0. The stem 36 and thumb piece 32 are more or less permanently attached to"` the handle I0 in a manner which `will permit rotation of the stem and thumb piece with re-A spect'to the handle but which will prevent longitudinal movement Vof these parts except von the application of extreme pressure tending to sep- Y arate them. This is accomplished by' providing a bushing 34 loosely received on the stern-30 between the thumb piece 32 andl a transverse securing pin 35, the bushing V34 being forced into the interior of the handle I0, and having a` especial design disclosed so that it can be readily fitted to most, if not all, of the known razor frames. The opening 3S as thus formed embodies a comparatively wide main central portion of general rectangular conguration and havingthe outwardly bowed or elliptically curved side walls 39 (Fig. ll) terminating in the straight longitudinal portions 40 which are parallel with the major axis and cutting edges of the blade and which in turn terminate in the angular (oblique) walls 4| which are continued in the walls forming the reduced tips 42 and disposed between said `top walls and the Walls 39. The angular portions 4| at either end are arranged substantially at right-anglesv to one another as showin The blade 36 may have the cut-away corners M for cooperation with the projections i4 described above. It will be understood that this construction is not essential and that the projections Mw and cut-away corners 44 may be omitted.

A blade constructed in accordance with this invention will satisfactorily cooperate with `a correspondingly shaped abutment as shown in Figs. 1, 2 and 3. It will, however, coact equally satisfactorily with a plurality of other connections or abutments, as, for example, the circular studs 46 of Fig. Zl, which engage the abutment surfaces 4D, 4l, or with the abutment 41 of oval designY as shown in Fig. 5, which engage kthe abutmentl surfaces 38, 39, All, 4|, or with the abutment 5| of a well-known razor as illustrated in Fig. 5a, said abutment engaging the abutments 38 and 39 and having reduced end eX- tensions engaging the tips or recesses 42. Similarly, the blade 35 may be used in a razor formed with theabutment i8 of Fig. 6, wherein the abutment is of general S-formation. The blade may likewise be used with a razor having rectangular studs 5|! as shown in Fig. 7, thus making it adapt- Vable Vfor use upon different razors the: blades and'cooperating therewith to clamp a blade therebetween, said guard having projections at its cor- `Aners toengage recesses at opposite sides of the ends of a blade, each end of the guard being concavely cut away between the projections to form a finger recess to expose the end of the blade,

the said corner projections of the guard and the Aend edges of theplate having their opposed inner surfaces provided with beveled divergent faces lying on opposite sides of and forming V- able within the handlerarnd having a detachable threaded engagement with said shank, a bushing sleeve at the inner end of the handle abutting at its outer end against the ringer-,piece and forming an annular bearing member in which the said attachment 'stem isfreely rotatable, the peripheral portion of said bushing having a. friction iit within said handle adapting it to maintain its position therein while being withdrawable under a strong pull, and a retaining member within the hollow handle passing through the stem and engaging the end of the bushing and forming a coupling connection between the stem and bushing whereby the latter may be withdrawn from the handle by a pull upon the stem.

3. In a safety razor, a guard of generally oblong rectangular form having a blade clamping face provided with a central, longitudinally extending'abutrnent projecting outwardly beyond said clamping face, receiving openings lying at the ends of said abutment and between the same and theV ends or" the guard, and a non-circular opening extending centrally through the guard and abutment, saidV recesses being of a form tapering toward the ends of the guard to provide straight end portions and obliquelyv inclined shoulders between the saine and the ends of the abutment, a clamping plate having a clamping face for clamping a blade against the face of the guard and provided with a recess to receive said abutment on the guard and projections at the ends of said recess of a conformation to engage the openings in the guard and the said inclined shoulders at the inner ends thereof, the said interengaging portions of the guard and plate forming blade guiding surfaces partly on the guard and partly on the plate and coacting with the clamping faces thereof to form substantially continuous blade engaging surfaces from end edge to end edge and side edge to side edge ofthe plate, a blade formed with an opening of substantially the same contour as said abutment and projections, whereby the guard, plate and blade are provided with undulatory engaging surfaces along their longitudinal edgesfrom end to end thereof, a hollow handle iixed to the guard, an attaching shank xed to the clamping plate and having a non-circular portion slidably en-V gaging the non-circular opening in the guard and terminating in a threaded circular portion extending into `the handle, and a rotary stem journaled in the handle and having an internally threaded portion engaging the threaded portion of the shank for detachably holding the guard and plate in blade clamping engagement.

4. In a safety razor. a guard, a clamping plate for clamping a blade between the same and the guard, a hollow handle carrying the guard, an attachment stem carried by the plate and extending movably through the guard into the handle, a coacting threaded attachment stem engaging the first-named stem and extending at one end through said hollow handle, a nger-piece mounted upon the projecting end of the second attachment stem and having a shoulder bearing against said end of the handle, a bushing sleeve forming a bearing for the outer end ofthe stem, said sleeve being iitted with a friction press nt within the handle and abutting against the shoulder of the nger-piece, and a fastening connection within the yhandle passing through the attachment stem carrying the sleeve on the opposite side of the bushing from the finger-piece, and forming a connection whereby on uncoupling the attachment stems the bushing may be withdrawn by a forcible pull with the second-named attachment stem from the handle. a

R. sEGAL. 

